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Merge commit '35dec7c96f7ee3eb17dd444f7067f0c776fb56ae'
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@@ -1,22 +1,24 @@
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---
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title: partials.Include
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linkTitle: partial
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description: Executes the named partial template. If the partial contains a return statement, returns that value, else returns the rendered output.
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categories: [functions]
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description: Executes the given partial template, optionally passing context. If the partial template contains a return statement, returns the given value, else returns the rendered output.
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categories: []
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keywords: []
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menu:
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docs:
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parent: functions
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function:
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action:
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aliases: [partial]
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related:
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- functions/go-template/return
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- functions/partials/IncludeCached
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- functions/go-template/template
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- methods/page/Render
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returnType: any
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signatures: ['partials.Include LAYOUT [CONTEXT]']
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relatedFunctions:
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- partials.Include
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- partials.IncludeCached
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signatures: ['partials.Include NAME [CONTEXT]']
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aliases: [/functions/partial]
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---
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Without a [`return`] statement, the `partial` function returns a string of type `template.HTML`. With a `return` statement, the `partial` function can return any data type.
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[`return`]: /functions/go-template/return
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In this example we have three partial templates:
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```text
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@@ -63,5 +65,21 @@ Then, within the partial template:
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<p>{{ .name }} is majoring in {{ .major }}. Their grade point average is {{ .gpa }}.</p>
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```
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To return a value from a partial template, it must contain only one `return` statement, placed at the end of the template:
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```go-html-template
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{{ $result := false }}
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{{ if math.ModBool . 2 }}
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{{ $result = "even" }}
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{{ else }}
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{{ $result = "odd" }}
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{{ end }}
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{{ return $result }}
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```
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See [details][`return`].
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[`return`]: /functions/go-template/return
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[breadcrumb navigation]: /content-management/sections/#ancestors-and-descendants
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[details]: /functions/go-template/return
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@@ -1,30 +1,32 @@
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---
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title: partials.IncludeCached
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linkTitle: partialCached
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description: Allows for caching of partials that do not need to be re-rendered on every invocation.
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categories: [functions]
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description: Executes the given template and caches the result, optionally passing context. If the partial template contains a return statement, returns the given value, else returns the rendered output.
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categories: []
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keywords: []
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menu:
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docs:
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parent: functions
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function:
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action:
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aliases: [partialCached]
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related:
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- functions/go-template/return
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- functions/partials/Include
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- functions/go-template/template
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- methods/page/Render
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returnType: any
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signatures: ['partials.IncludeCached LAYOUT CONTEXT [VARIANT...]']
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relatedFunctions:
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- partials.Include
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- partials.IncludeCached
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signatures:
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- partials.IncludeCached LAYOUT CONTEXT [VARIANT...]
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- partialCached LAYOUT CONTEXT [VARIANT...]
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- partials.IncludeCached NAME CONTEXT [VARIANT...]
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- partialCached NAME CONTEXT [VARIANT...]
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aliases: [/functions/partialcached]
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---
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The `partialCached` template function can offer significant performance gains for complex templates that don't need to be re-rendered on every invocation.
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Without a [`return`] statement, the `partialCached` function returns a string of type `template.HTML`. With a `return` statement, the `partialCached` function can return any data type.
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**Note:** Each Site (or language) has its own `partialCached` cache, so each site will execute a partial once.
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The `partialCached` function can offer significant performance gains for complex templates that don't need to be re-rendered on every invocation.
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**Note**: Hugo renders pages in parallel, and will render the partial more than once with concurrent calls to the `partialCached` function. After Hugo caches the rendered partial, new pages entering the build pipeline will use the cached result.
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{{% note %}}
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Each Site (or language) has its own `partialCached` cache, so each site will execute a partial once.
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Hugo renders pages in parallel, and will render the partial more than once with concurrent calls to the `partialCached` function. After Hugo caches the rendered partial, new pages entering the build pipeline will use the cached result.
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{{% /note %}}
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Here is the simplest usage:
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@@ -32,18 +34,32 @@ Here is the simplest usage:
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{{ partialCached "footer.html" . }}
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```
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You can also pass additional arguments to `partialCached` to create *variants* of the cached partial. For example, if you have a complex partial that should be identical when rendered for pages within the same section, you could use a variant based upon section so that the partial is only rendered once per section:
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Pass additional arguments to `partialCached` to create variants of the cached partial. For example, if you have a complex partial that should be identical when rendered for pages within the same section, use a variant based on section so that the partial is only rendered once per section:
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{{< code file="partial-cached-example.html" >}}
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{{< code file=partial-cached-example.html >}}
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{{ partialCached "footer.html" . .Section }}
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{{< /code >}}
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If you need to pass additional arguments to create unique variants, you can pass as many variant arguments as you need:
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Pass additional arguments, of any data type, as needed to create unique variants:
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```go-html-template
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{{ partialCached "footer.html" . .Params.country .Params.province }}
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```
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Note that the variant arguments are not made available to the underlying partial template. They are only use to create a unique cache key. Since Hugo `0.61.0` you can use any object as cache key(s), not just strings.
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The variant arguments are not available to the underlying partial template; they are only used to create unique cache keys.
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See also [The Full Partial Series Part 1: Caching!](https://regisphilibert.com/blog/2019/12/hugo-partial-series-part-1-caching-with-partialcached/).
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To return a value from a partial template, it must contain only one `return` statement, placed at the end of the template:
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```go-html-template
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{{ $result := false }}
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{{ if math.ModBool . 2 }}
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{{ $result = "even" }}
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{{ else }}
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{{ $result = "odd" }}
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{{ end }}
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{{ return $result }}
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```
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See [details][`return`].
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[`return`]: /functions/go-template/return
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12
docs/content/en/functions/partials/_index.md
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12
docs/content/en/functions/partials/_index.md
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@@ -0,0 +1,12 @@
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---
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title: Partial functions
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linkTitle: partials
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description: Template functions to call partial templates.
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categories: []
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keywords: []
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menu:
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docs:
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parent: functions
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---
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Use these functions to call partial templates.
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